Transmission Fluid Leak From Cooler Line on Chevrolet Lumina

The rubber section of an automatic transmission cooler line may develop a fluid leak . In some cases the leaking section of hose can be replaced. In others, the complete cooler line must be replaced to correct this concern.

RepairPal Verified
Average mileage: 133,279 (79,096–217,000)
10 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999
16 people reported this problem
6 people shared problem details
1999 Chevrolet Lumina120,000
Transmission Fluid leaking from metal portion of Cooler line, on bend near radiator
trans lines leak near radiator
lines leaking.
Car smokes bad when driving want change gears
Transmission Cooler Lines Can Leak Fluid inside the radiator
1996 Chevrolet Lumina217,000
fixed line. no further issue
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